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Finding the Fourth Proportional to 67.48, 92.89 and 58.17

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Solution

The fourth proportional to 67.48, 92.89 and 58.17 is: 80.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.48 : 92.89 = 58.17 : x
  2. Step 2: Convert to fraction form
    67.48/92.89 = 58.17/x
  3. Step 3: Cross multiply
    67.48x = 92.89 × 58.17
  4. Step 4: Simplify right side
    67.48x = 5,402.80
  5. Step 5: Solve for x
    x = 5,402.80/67.48
  6. Step 6: Final answer
    x = 80.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.